Infernal Legacy grants tieflings ability to cast Hellish Rebuke as a reaction at 3rd level, as if it was cast using a 2nd level spell slot. Hellish Rebuke as spell has Verbal and Somatic components.
How can a tiefling using a sword and a shield (or wielding two weapons, separate item in both hands anyway), cast it in a battle, as a reaction? Is there something which allows practical use in regular battle, or is this class feature nearly useless for most front line fighting tieflings? Am I missing something obvious here?
The spell description does say "point a finger", which could be plausibly done with weapon in hand, but I don't think requirements of somatic component allow such exceptions strictly RaW?
I mean, it can still be used in bar fights, but 3d10 fire damage seems rather excessive retribution for some peasant hitting you with a beer mug... And I guess there's the odd ambush where damage is done when the PC does not have weapon in hand yet. And a principled good-aligned warrior might walk into a battle with an empty hand, and only envelope the baddie in hellfire after receiving a damaging hit, and then draw a weapon, but that is getting a bit ridiculous...
Alternatively, are there other options for making that high-AC front-line tiefling warrior, who can use its racial abilities in battle well?